Board Thread:Pokémon Help/@comment-30675283-20161204130125/@comment-28882506-20161204173815

You should try to max most of the EVs so Dragonite will be as strong as possible. If you just wanted to max one of them, I'd say Maxed Speed and Attack.

A good moveset to use is (I'm not sure if Dragon Rush is in PBB yet,)

Dragon Claw, Dragon Rush, Dragon Pulse, and Fly.

Salamence is a little bit better because of its Mega Evolution. However, if you up Dragonite's EV stats, you should be fine.

Have a great Pokemon journey. :3